Synthesis and Sintering最新文献_第8页

Corrosion and mechanical behavior evaluation of in-situ synthesized Cu-TiB2 nanocomposite 原位合成Cu-TiB2纳米复合材料的腐蚀与力学行为评价

Synthesis and Sintering Pub Date : 2021-06-29 DOI: 10.53063/synsint.2021.1228

H. Aghajani, S. A. N. Mehrabani, A. T. Tabrizi, Falih Hussein Saddam

引用次数: 2

Direct catalytic production of dimethyl ether from CO and CO2: A review CO和CO2直接催化生产二甲醚的研究进展

Synthesis and Sintering Pub Date : 2021-06-28 DOI: 10.53063/synsint.2021.1229

Asieh Akhoondi, A. Osman, A. Eslami

引用次数: 7

Pressureless sinterability study of ZrB2–SiC composites containing hexagonal BN and phenolic resin additives 含六方BN和酚醛树脂添加剂ZrB2-SiC复合材料的无压烧结性能研究

Synthesis and Sintering Pub Date : 2021-06-27 DOI: 10.53063/synsint.2021.1231

I. Farahbakhsh, R. Antiochia, Ho Won Jang

{"title":"Pressureless sinterability study of ZrB2–SiC composites containing hexagonal BN and phenolic resin additives","authors":"I. Farahbakhsh, R. Antiochia, Ho Won Jang","doi":"10.53063/synsint.2021.1231","DOIUrl":"https://doi.org/10.53063/synsint.2021.1231","url":null,"abstract":"This research is dedicated to the role of different amounts of hexagonal BN (hBN: 0, 1.5, 3, and 4.5 wt%) on the pressureless sinterability of ZrB2–25 vol% SiC ceramics. Phenolic resin (5 wt%) with a carbon yield of ~40 % was incorporated as a binder to the powder mixtures and after initial cold pressing, the final sintering process was performed at 1900 °C for 100 min in a vacuum furnace. The as-sintered specimens were characterized by X-ray diffractometry, field emission scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The results disclosed that the incorporation of 1.5 wt% hBN could increase the relative density to ~92%, while the sample with zero hBN content just reached ~81% of full densification. Appropriate hBN content not only facilitated the particle rearrangement during the cold pressing, but also removed the harmful oxide impurities during the final sintering. Nevertheless, the addition of higher amounts of hBN remarkably lessened the densification because of more delamination of the non-reacted hBN flakes and release and entrapment of more gaseous by-products induced by the reacted hBN phases.","PeriodicalId":22113,"journal":{"name":"Synthesis and Sintering","volume":"45 4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82731376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

The effect of synthesized Cu2O on the microbial corrosion inhibition of urban concrete sewer systems 合成Cu2O对城市混凝土下水道系统微生物缓蚀的影响

Synthesis and Sintering Pub Date : 2021-06-22 DOI: 10.53063/synsint.2021.1233

Zahra Khademmodaresi, Fereshteh Bakhtiari, Mohammadmehdi Azizi

{"title":"The effect of synthesized Cu2O on the microbial corrosion inhibition of urban concrete sewer systems","authors":"Zahra Khademmodaresi, Fereshteh Bakhtiari, Mohammadmehdi Azizi","doi":"10.53063/synsint.2021.1233","DOIUrl":"https://doi.org/10.53063/synsint.2021.1233","url":null,"abstract":"The microbial corrosion of reinforced concrete sewers was inhibited by synthesized cuprous oxide (Cu2O) nanoparticles. The antibacterial characteristics of Cu2O on Acidithiobacillus thiooxidans were investigated by temporal variation of pH, turbidity, and bacterial counting. Three reinforced concrete samples with different weight percentages of electrodeposited Cu2O (0.06 wt%, 0.055 wt %, 0.05 wt %) were used. The bacterial counting showed that the number of bacteria in samples with 0.06, 0.055, and 0.05 wt% of Cu2O was 4.82, 4.42, and 2.94 times lower than the blank sample (BS), respectively. After bacterial growth, the optical density measurement showed that the percentage of turbidity enhancement for samples with 0.06, 0.055, and 0.05 wt% of Cu2O were 108%, 118%, 165%, respectively, while it was 412% for the BS. Moreover, the pilot stage's pH monitoring revealed that the electrodeposited Cu2O lowered the concentration of hydronium between 7 to 81 times compared to the BS. Experiments indicated that slight changes in the amount of electrodeposited Cu2O lead to significant changes in samples' ability to hinder bacterial growth and microbial-induced corrosion. ","PeriodicalId":22113,"journal":{"name":"Synthesis and Sintering","volume":" 63","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91415444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Recent advances in synthesis and applications of mixed matrix membranes 混合基质膜的合成及应用研究进展

Synthesis and Sintering Pub Date : 2021-03-29 DOI: 10.53063/SYNSINT.2021.116

Iman Salahshoori, A. Seyfaee, A. Babapoor

{"title":"Recent advances in synthesis and applications of mixed matrix membranes","authors":"Iman Salahshoori, A. Seyfaee, A. Babapoor","doi":"10.53063/SYNSINT.2021.116","DOIUrl":"https://doi.org/10.53063/SYNSINT.2021.116","url":null,"abstract":"Researchers are currently considering membranes separation processes due to their eco-friendly, process simplicity and high efficiency. Selecting a suitable and efficient operation is the primary concern of researchers in the field of separation industries. In recent decades, polymeric and inorganic membranes in the separation industry have made significant progress. The polymeric and inorganic membranes have been challenged due to their competitiveness in permeability and selectivity factors. A combination of nanoparticle fillers within the polymer matrix is an effective method to increase polymeric and inorganic membranes’ efficiency in separation processes. Mixed matrix membranes (MMMs) have been considered by the separation industry due to high mechanical and physicochemical, and transfer properties. Moreover, gas separation, oil treatment, heavy metal ions removal, water treatment and oil-water separation are common MMMs applications. Selecting suitable polymer blends and fillers is the key to the MMMs construction. The combination of rubbery and glassy polymers with close solubility parameters increases the MMMs performance. The filler type and synthesis methods also affect the morphological and transfer properties of MMMs significantly. Zeolites, graphene oxide (GO), nanosilica, carbon nanotubes (CNTs), zeolite imidazole frameworks (ZIFs) and metal-organic frameworks (MOFs) are used in the MMMs synthesis as fillers. Finally, solution mixing, polymerization in situ and sol-gel are the primary synthesising MMMs methods.","PeriodicalId":22113,"journal":{"name":"Synthesis and Sintering","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83856149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 29

Wear behavior of self-propagating high-temperature synthesized Cu-TiO2 nanocomposites 自扩展高温合成Cu-TiO2纳米复合材料的磨损行为

Synthesis and Sintering Pub Date : 2021-01-01 DOI: 10.53063/synsint.2021.1332

H. Aghajani, M. Roostaei, Shaya Sharif Javaherian, Arvin Taghizadeh Tabrizi, Ali Abdoli Silabi, N. Farzam Mehr

引用次数: 2